There are
759 mi
from Amarillo, TX to Hazelwood, MO
That's the driving distance. It would take 13 hours 23 mins to go from Amarillo, Texas to Hazelwood, Missouri.
The flight distance (direct flight from Amarillo, TX to Hazelwood, MO) is 677.67 mi.
759 mi = 1,221.83 kms